39466-61-0Relevant articles and documents
Crystal structure of Ce3Ni2(BN)2N and magnetic behavior of (CeNi(BN))2(CeN)x with x = 0, 1
Glaser, Jochen,Mori, Takao,Meyer, H.-Juergen
, p. 1067 - 1070 (2008)
The new compound Ce3Ni2(BN)2N was synthesized by a modified solid state metathesis reaction. The crystal structure of Ce3Ni2(BN)2N was found to be isotypic with the superconducting compound La3Ni2(BN)2N, according to Rietveld refinements performed on X-ray powder data (I4/mmm, Z = 2, a = 3.5817(1) A, c = 20.283(1) A). Corresponding solid state reactions of mixtures composed of CeN/NiB and CeNi/BN yielded CeNi(BN) and a mixture of the two closely related layered structures (CeNi(BN)) 2(CeN)x with x = 0 and 1. Magnetization experiments on these samples revealed temperature independent paramagnetic behavior for Ce 3Ni2(BN)2N and CeNi(BN) without any magnetic ordering down to 5 K.
PrNi and CeNi hydrides with extremely high H-density
Kolomiets,Miliyanchuk,Galadzhun,Havela,Vejpravova
, p. 95 - 97 (2005)
The new hydrides, PrNiHx and CeNiHx were synthesized by two different techniques: at low hydrogen pressure (pH2) and elevated temperature, and at pH2 = 60 bar and room temperature. The products of both techniques have similar crystal
Magnetic properties of new Ce-T-Mg compounds (T = Ni, Pd)
Geibel,Klinger,Weiden,Buschinger,Steglich
, p. 202 - 204 (1997)
We present results of the first investigation of ternary Ce-compounds containing a transition metal and Mg. The structure, resistivity and susceptibility of Ce2Ni2Mg, CeNi4Mg and CePdMg are reported and discussed. These compounds crystallize in the same structure as their respective In-homologues and show very similar structural parameters, but weaker strength of the Ce-4f-hybridization.
Measurement of Seebeck effect (thermoelectric power) at high pressure up to 40 GPa
Shchennikov, Vladimir V.,Ovsyannikov, Sergey V.,Manakov, Andrei Y.
, p. 1168 - 1174 (2010)
The paper reports details of a high-pressure thermoelectric power (Seebeck effect) technique up to 40 GPa. Several different types of high-pressure cells with anvil insets are presented. The technique was applied for measurements of pressure dependence of the thermopower of several substances including elemental metals (lead, Pb; indium, In), ceriumnickel alloy, CeNi and sulphur, S. Two peculiarities in the pressure dependences of the thermopower of CeNi were found and attributed to structural transformations, near ～5 and ～10 GPa. These transitions were confirmed in direct X-ray diffraction studies. Sulphur compressed to 40 GPa exhibited a hole type conductivity and the thermopower value was about ～1 mV/K. Additionally, as an example of pressure calibration, the data on the electrical resistivity of zinc selenide, ZnSe, are given in a range of 023 GPa. These data suggest three possible scenarios of phase transitions from a rock salt (RS) high-pressure phase of ZnSe under decompression: RS→zinc blende (ZB), RS→cinnabar→ZB, and RS→wurtzite.
Effect of sintering conditions on the formation of single-phase NdMgNi4 compound and its hydrogen storage properties
Wang,Zhou, Huaiying,Zou,Yao, Qingrong
, p. 260 - 263 (2008/10/09)
Effects of different sintering conditions on the formation of single-phase NdMgNi4 compound and its electrochemical properties have been investigated. XRD analysis shows that an ideal single-phase compound of NdMgNi4 can be synthesized by sintering the pressed tablets of mixture of Mg, Ni and NdNi powders under 973 K for 5 h; single-phase compounds of REMgNi4 (RE = La, Ce, Pr) can be synthesized in this way as well. The electrochemical properties were measured by simulated battery tests. The maximum discharge capacity of NdMgNi4 compound was about 200 mAh/g, and just 78 mAh/g for CeMgNi4 compound. NdMgNi4 compound could store 3.5 H/M of hydrogen under 2.5 MPa at 298 K, whilst it is difficult to absorb hydrogen at a higher temperature (473 K).
Electrical and thermal transport in CeNi and LaNi
Rudajevová, Alexandra,Vasylyev, Denis,Musil, Ond?ej
, p. 758 - 759 (2008/10/09)
We have measured the electrical resistivity and thermal conductivity of CeNi, LaNi and La 0.15Ce 0.85Ni in the temperature range 4-400 K simultaneously on the same specimen using the TTO option in PPMS (Quantum Design) facility. Anom
